I did not know that, but Im new, so I did a quick search and immediately found many threads that report that the lockout mode has higher parasitic drain than unlocked, in other Nitecore products.
sucks-batteries-to-the-end
Nitecore-TM06!
Nitecore EC4 stand by current drain
Nitecore E4A completely drainning my batteries in standby mode. Normal?
Nitecore-Flashlight